Tropical storms

• Causes of uneven development

  • Physical - landlocked, climate, natural hazards
  • Economic - trade, single export dependency, low price exported primary goods
  • Historical - war, colonialism
• Typhoon Haiyan

  • 7th November, 2013
  • Category 5
  • Winds up to 195mph
  • Storm surges up to 5m
• What is the scale called to measure tropical storms?

  Saffir-Simpson scale
• Effects of Typhoon Haiyan

  • 6300 people died
  • 30000 fishing boats destroyed
  • 600000 people displaced
  • Affected 14 million people
  • 1.9 million left homeless
  • Looting and violence
• Responses to Typhoon Haiyan

  • 1200 evacuation centres set up
  • UK government sent shelter kits
  • Philippines Red Cross sent food aid
  • 920,000 permanently relocated
  • UK government donated £75 million
  • UNICEF vaccinated thousands of children
• What are the four ways to manage tropical storms?

  • Prediction
  • Protection
  • Planning
  • Preparation
• Prediction

  Data from satellites can anticipate the path a storm will take and when it will make landfall
• Protection

  Design buildings that can withstand the effects of a tropical storm
• Planning

  Plan evacuation routes, train emergency services, or move homes and businesses away from the sea to minimise the risk a storm poses.
• Preparation

  Teach people how to prepare for a tropical storm by showing them what to pack in a survival kit and how to evacuate safely
• Mitigation

  To reduce or prevent the effects of something from happening
• Adaptation

  Adjusting to the effects of something happening and its future effects
• How was the environment affected by Haiyan?

  • 800,000L of oil was spilled by an oil tanker
  • Eutrophication
  • Flooding
• How does a tropical storm form?

  1. The Sun heats the ocean to at least 27 degrees
  2. This causes warm air to rise, creating an area of low pressure
  3. As the air rises, it cools and condenses to form clouds, which eventually turn into thunderstorms with cumulonimbus clouds
  4. Some of the air then cools and sinks in the centre of the storm, forming the eye, which is an area with calm conditions
  5. Because most of the storm is an area of low pressure, air from the surrounding area rushes into the storm
  6. The storm then rotates due to the force of Earth's rotation, known as the Coriolis force
• Which way do objects deflect in the Northern hemisphere?

  Right
• Which way do objects deflect in the Southern hemisphere?

  Left